def plane(self):
"""
:return: The reference surface if it is a plane.
:rtype: afem.geometry.entities.Plane
:raise TypeError: If the reference surface is not a plane.
"""
if CheckGeom.is_plane(self.sref):
return self.sref
raise TypeError('Reference surface is not a plane.')
def is_pln_out(self, pln):
"""
Check to see if the plane intersects the box.
:param afem.geometry.entities.Plane pln: The plane.
:return: *True* if outside, *False* if it intersects.
:rtype: bool
:raise TypeError: If *pln* is not a plane.
"""
if not CheckGeom.is_plane(pln):
msg = 'Methods requires a Plane instance.'
raise TypeError(msg)
return self.IsOut(pln.object)
